Cutter-guard



M. L. PINETTE.

CUTTER GUARD.

APPLICATION Fl-LED MAY-22,1920.

' Patented Apr.'19,1921.

lnvento 'z omrsn STATES PATENT OFFICE.

MARCEL I1. PINE-CUTE, OF WESTBROOK, MAINE.

CUTTER-GUARD.

Application filed May 22, 1920. I Serial No. 383,370.

Hitherto, these devices have been so connected with the frame of themachine that they were either stationary on the machine or they wereremovable with considerable difiiculty.

There are times in the use of the machine when the work being operatedupon requires that the bed of the machine shall be entirely unobstructedand that the protecting device shall be completely removed to a pointbelow the level of the bed.

The object of my invention is to construct a cutter guard which is heldfirmly 1n ts normal position covering the cutter knife but which may bequickly and easily swung down to the side of the machine entirely out ofthe way of the work and as easily replaced.

I accomplish this object by securlng a bracket to the side of themachine with a riser which supports the guard plate holding it inposition and is so connected with the bracket by a hinge connection thatwhile normally having a rigid connection it may be quickly shifted toits hinge connection by sliding it slightly agalnst the action of atension spring or by some such simple and quickly operable means.

I have illustrated my invention by means of the accompanying drawing inwhich Figure 1 shows a side elevation of a portion of the buzz planerwith the cutter cylinder in section.

Fig. 2 is a plan of the same.

Fig. 3 is an enlarged rear elevation of the operative parts of thedevice showing the bed of the machine in section and,

Fig. & is an enlarged view in elevation showing the connection betweenthe riser and the bracket.

Referring to the drawing:

1 represents the bed of the machine, 2 is Specification of LettersPatent. Patented Apr. 19, 1921.

the upright guide, against which the work is pressed, and 3 is theplaner head.

The cutter guard is supported byv a bracket 4 which is connected withthe frame 1. This connection may be made in any well known manner but'ashere shown there is formed on the bracket an upright stud 5 fitting inan opening formed in the bed and extending vertically through the same.

The stud 5 extends up in this opening and is secured in place'by a setscrew 6.

The lower end of the bracket which pro-- jects outward beyond the edgeof the table has two ears 7 and 8 through which pass the hinge spindle 9by which the riser 10 is hinged to the bracket.

The inner surface of the ear 7 is formed with a recess 12 and on theouter surface of- 'the corresponding portion of the riser isformed aprojection 11 which fits normally into the recess 12 and thus holds theriser rigidly in place. 7

The distance between the ears 7 and 8 is somewhat greater than the lowerend of the riser so that the riser is capable of sliding longitudinallyon the pin 9 a limited dis tance. The riser and the ear 11 are keptnormally interlocked by a spring 13 which surrounds the pin 9 and fitswithin a recess formed in the lower end of the riser.

Thus, when the spring is in operation it tends to hold the riser and thebracket rigidly together but when lateral pressure is put on the riserit .can be made to slide along the pin 9 so as to unlock the riser fromthe ear 7 and the riser to be turned or swung down entirely out of theway.

As here shown, the riser 10 consists of a relatively broad flat memberextending upward to the level of the top of the bed or table. It isthere connected by a hinge joint with a horizontal plate 14 which restson the bed or table.

The plate 14: supports one end of the guard plate pivoted to move in ahorizontal direction so that the guard plate may be adjusted toward andaway from the guide, 2.

The connection with the guard plate which is a thin plate is arrangedthrough the guard holder 16 which is pivoted to the inner end of theguard 14 being retained in place by a thumb nut 17.

Thus, by loosening up the thumb nut 17 the guard plate 15 may be made toswing far enough away from the guide 2 so as to leave just room enoughfor the work to be joined to slide between the edge of the guard plate15 and the guide 2. 7

Thus, the planer knife is entirely covered and all dangerous work isavoided.

When it is desired to make use of the entire top of the table as whenwide articles are jointed it is only necessary to lightly push the riser10 toward the right as here shown and all the parts may be turned downaround the pivot pin 9, the parts hanging down at the side of themachine in the position as shown by dotted lines in Fig. 3.

The guard plates and its attached partsmay be quickly swung up intoposition when needed, the interlockiing joint between the riser and thebracket automatically coming into engagement by the pressure spring 13.This device meets the requirements of wood working mills where in orderto be used by the men the manipulation in removing and replacing thedevice must be exceed. ingly simple and quick of adjustment; otherwise,the operatorswill neglect to use them and take their chances otaccident.

The ease and quickness of manipulation to get the guard removed and outof the way makes this a device which the workman will readily use andwhich will thus be effective in preventing accidents.

support and exten'din I claim: r

1. In a cutter guard for buzz planers'and the like, the combination of abracket secured to the frame of the machine, a riser hinged to saidbracket, a guard plate support secured to the upper end of said riserextending over and resting on the table of the machine, a guard platesecured to said over .the cutter and means for holding said riserin'locked position with said bracket when in operative position and inreleased or hinged position when the device is not in operation.

2. In a cutter guard for buzz planers and the like, the combination of abracket secured to the frame of the machine, a riser, a hinge pinv forhinging said riser to said bracket, a spring for pressing the riserlongitudinally on Vsai'dpin, the contacting portions of the riser andbracket being formed'to interlock when pressed together by said springand a guard plate support secured to the upper-end of said riser eX-tending over and resting on the table of the machine and a guard platesecured to said support. V

In testimony whereof I have afiixed my signature. 7

MAROEL L. PINETTE.

